Topcon Corporation

Kabushiki Kaisha Topcon

Nec Display Solutions, Ltd.

Nippon Steel Sumitomo Metal Corporation

Sega Corporation

Tadayuki Ito

Hitoshi Otani

Nobuo Kochi

You Sasaki

Takahiro Komeichi

Ken-ichiro Yoshino

Seiji Matsui

Yoichiro Okoshi

Naoki Morikawa

Satoshi Yasutomi

Yasuki Sato

Mitsuharu Yamada

Takeshi Sasaki

Hiroyuki Aoki

Kazuhiro Ogawa

Yoshihito Mochizuki

Kazuo Kitamura

Motohiro Miyajima

Takayuki Noma

Yoshihiro Nishi

Fumio Ohtomo

Naoto Fukasawa

Junichi Nakagawa

Kazuki Osaragi

Masahiro Yamamoto

Kenichi Hasegawa

Daisuke Sasaki

Takumi Yoshida

Kenichiro Yoshino

Nobuyuki Fukaya

Yoshihiro Takechi

Chin-Jen Lin

Kozo Saito

Masahiro Doki

Kenichi Hirasawa

Tetsuo Nishiyama

Masae Matsumoto

Ryosuke Tomizawa

Hitoshi Ootani

Naoki Itakura

Belal Gharaibeh

Keng Hoo Chuah

Ahmad Salaimeh

Huaxiong Huang

Tomoya Takeuchi

Kazufumi Ito

Sean C Bohun

Masumori Chida

Kiyofumi Natori

Ken-Ichiro Yoshino

A three-dimensional survey apparatus includes a collimating ranging unit, a scanner unit, and a control calculation portion. The control calculation portion executes control to acquire, based on a survey result of the collimating ranging unit, three-dimensional data related to a characteristic portion of the measurement object which is present between a plurality of pieces of three-dimensional data that are included in point cloud data having been acquired by the scanner unit and of which the three-dimensional data has not been acquired by the scanner unit, and to add the three-dimensional data related to the characteristic portion of the measurement object having been acquired based on a survey result of the collimating ranging unit to the point cloud data having been acquired by the scanner unit.

Three-dimensional survey apparatus, three-dimensional survey method, and three-dimensional survey program

A surveying system includes a target unit having a reflection target and an encoder pattern showing an angle of the target unit; a scanner configured to acquire three-dimensional point cloud data, measured coordinates of the target, and optically read the encoder pattern to acquire an encoder pattern read angle; and a leveling base configured to selectively allow either of the target unit and the scanner to be removably mounted. The scanner calculates a direction angle of the leveling base based on the encoder pattern read angle and the offset angle of the target unit, calculates coordinates of an installation point of the target unit based on the measured coordinates of the target and the direction angle of the target, and calculates a direction angle of the scanner based on the offset angle of the scanner and the direction angle of the leveling base on which the scanner is mounted.

Target unit

To provide a three-dimensional survey apparatus, a three-dimensional survey method, and a three-dimensional survey program which are capable of suppressing an occurrence of a data-deficient part. A three-dimensional survey apparatus includes a collimating ranging unit, a scanner unit, and a control calculation portion. If there is a data-deficient part where three-dimensional data is not acquired among a measurement object when the scanner unit acquires point cloud data, the control calculation portion executes control to replenish the three-dimensional data related to the data-deficient part having been acquired by the collimating ranging unit to the point cloud data having been acquired by the scanner unit.

Correspondence relationships between two laser scanning point clouds are easily determined with high accuracy. A data processor includes a laser scanning point cloud acquiring unit and a laser scanning point cloud correspondence relationship determining unit. The laser scanning point cloud acquiring unit acquires a first laser scanning point cloud that is obtained in a first time period and a second laser scanning point cloud that is obtained in a second time period. The laser scanning point cloud correspondence relationship determining unit determines correspondence relationships between the first laser scanning point cloud and the second laser scanning point cloud on the basis of a laser scanning point cloud relating to a fixed object. The fixed object is contained in both the first laser scanning point cloud and the second laser scanning point cloud and does not change between the first time period and the second time period.

Data processor, data processing method, and data processing program for determining correspondence relationships between laser scanning point clouds

Surveying system and surveying method

A method for calibrating unevenness of a plurality of measuring elements in an apparatus for evaluating road surface property having a plurality of measuring elements repeats steps of computing separation quantities from a calibration reference plane on a reference area regarding all measuring elements; determining a measuring element where the separation quantity is maximum from among all the measuring element to calibrate the measuring element such that a difference between point cloud data produced from a measurement value of the measuring element where the separation quantity is maximum and the calibration reference plane becomes equal or less than a predetermined value, producing a new calibration reference plane from the measurement values of the measuring elements including the calibrated measuring element, until RMS of point cloud data does not change.

Method for calibrating measuring element, method for evaluating road surface properties, and apparatus for evaluating road surface properties

Provided is a data processing device including a trajectory calculating unit configured to calculate a trajectory of a mobile body that moves in a measurement section, based on measurement data acquired by the mobile body, a virtual level difference detecting unit configured to detect a virtual level difference occurring in the trajectory, a trajectory smoothing unit configured to smooth the trajectory in a section before and after the virtual level difference according to a magnitude of the virtual level difference, and a point group data generating unit configured to generate synthetic point group data by synthesizing the smoothed trajectory and point group data included in the measurement data.

Data processing device, data processing method, and data processing program

A laser scanner which includes a mobile station calculates a two-dimensional fixed station coordinate system formed at least three fixed stations, calculates coordinates of intersections of at least three circles, which have the fixed stations as their centers and the distances between each of the fixed stations and the mobile station as their radii, at every predetermined angle as each positioning result of the mobile station while horizontally rotating the laser scanner by 360&#xb0; around a mechanical point, averages each of the positioning results corresponding to 360&#xb0; and calculates approximate mechanical point coordinates in the fixed station coordinate system.

Laser scanner system

A technique is provided to facilitate visual recognition of deviations and misalignments in a superposed image. The superposed image is generated by superposing laser scanning point clouds on a panoramic image, which is obtained by stitching base images that are taken from different points of view. The panoramic image can include deviations between the base images. The superposed image can include misalignments between the point cloud image and the panoramic image. A display controlling device for a survey image includes a panoramic image generating unit that generates a panoramic image by stitching multiple still images, an image and point-cloud-image superposing unit that superposes laser scanning point clouds on the panoramic image, and a point-cloud-image transparency adjuster that adjusts a transparency of the image of the laser scanning point clouds to cause the laser scanning point clouds to be visually recognized while the underlying panoramic image is also visually recognized.

Device, method, and program for controlling displaying of survey image

The invention provides a laser scanner system, which comprises a laser scanner which includes a distance measuring unit for emitting a distance measuring light, receiving a reflected light, and performing a distance measurement, a scanning unit for rotatably irradiating the distance measuring light, a directional angle detecting unit for detecting an irradiating direction of the distance measuring light, a GNSS device and a control arithmetic unit, and a target which sets a back sight point, wherein the control arithmetic unit has a target scanning mode and a point cloud data measurement mode, and is configured to calculate point cloud data with a global coordinate value and a global coordinate value of the target based on the global coordinate value obtained by the GNSS device, a measurement result obtained by executing the point cloud data measurement mode and a measurement result obtained by executing the target scanning mode.

Laser scanner system and registration method of point cloud data

To carry out evaluation of a road surface property easily and in a short period of time without being costly. Measurement data of a road surface measured for a predetermined road width along a path of a road to be measured is acquired; a unit area having a preset length dimension along the path in the road width is set along the path; a model plane in the unit area is set based on the measurement data at each point in the unit area; point group data is generated from a spaced amount of the model plane and each point in the unit area, visualize and display the spaced amount in the path, and display a result of evaluation obtained through statistical processing with the path shown on a map.

Evaluation method of road surface property, and evaluation device of road surface property

To rapidly and reliably measure a road surface property using measurement results and determination results of a road surface in the past. A vehicle mounted with a road surface property acquiring device is guided to a specified point on a road and measurement is carried out. The past road surface data on a past road surface property is acquired, a present position of the vehicle is acquired, and a past road surface property image representing a feature amount of the road surface property in a range including the present position created based on the past road surface data is displayed; and the vehicle is guided from the present position to a specified area while measuring a state of the road surface with the road surface property acquiring device.

Road surface property acquiring method and road surface property acquiring device

A technique for efficiently calibrating a camera is provided. Reference laser scan data is obtained by scanning a buildingby a laser scanner, which is fixed on a vehicleand has known exterior orientation parameters, while the vehicletravels. An image of the buildingis photographed at a predetermined timing by an onboard camera. Reference point cloud position data, in which the reference laser scan data is described in a coordinate system defined on the vehicleat the predetermined timing, is calculated based on the trajectory the vehiclehas traveled. Matching points are selected between feature points in the reference point cloud position data and in the image. Exterior orientation parameters of the cameraare calculated based on relative relationships between the reference point cloud position data and image coordinate values in the image of the matching points.

Operating device, operating system, operating method, and program therefor

The invention provides a laser scanner system, which comprises a laser scanner which includes a distance measuring unit for receiving a reflection light of a distance measuring light from an object to be measured and performing a distance measurement, a scanning unit for rotatably irradiating the distance measuring light, a directional angle detecting unit for detecting an irradiating direction of the distance measuring light, a GNSS device, and a control arithmetic unit, wherein the laser scanner is installed at two points, and wherein the control arithmetic unit obtains global coordinates of installation positions of the laser scanner from the GNSS device respectively, scans the distance measuring light over a total circumference at each of the installation positions, acquires point cloud data of the total circumference, performs a shape matching of the two point cloud data and combines the two point cloud data.

An image processing apparatus is provided to display an image on a screen, the image facilitating visual ascertainment of relationships between each of a plurality of items of point cloud data and point cloud data arising from combining the plurality of items of point cloud data. The image processing apparatus includes a display controlling section configured to 3D display combination point cloud data combining a plurality of items of point cloud data obtained from a plurality of viewpoints and allow 3D display of one item out of the plurality of items of point cloud data obtained from the plurality of viewpoints.

Image processing apparatus, image processing method, and image processing program

Growing community of inventors

Tokyo, Japan

Tadayuki Ito